RESUMO
A new pyrrolizidine alkaloid, named crotavitelin, was isolated from fruits of Crotalaria vitellina, Fabaceae (Papilionoideae). The structure was established by spectroscopic techniques such as one-dimensional and two-dimensional NMR, IR, and MS.
Assuntos
Crotalaria/química , Frutas/química , Alcaloides de Pirrolizidina/química , Espectroscopia de Ressonância Magnética , Espectrometria de Massas , Estrutura Molecular , Alcaloides de Pirrolizidina/isolamento & purificação , Espectrofotometria InfravermelhoRESUMO
BACKGROUND: COVID-19 pandemic information is critical to study it further, but the virus has still not been confined. In addition, even if there is no longer any threat, more knowledge may be gathered from these resources. METHODS: The data used in this study was gathered from several scientific areas and the links between them. Since the COVID-19 pandemic has not been fully contained, and additional information can be gleaned from these references, bibliometric analysis of it is important Results: A total of 155 publications on the topic of "COVID-19" and the keyword "nanotechnology" was identified in the Scopus database between 2020 and 2021 in a network visualization map. CONCLUSION: As a result, our analysis was conducted appropriately to provide a comprehensive understanding of COVID-19 and nanotechnology and prospective research directions for medicinal chemistry.